Rope system for coal-bridge hoists



No. 752,483. v Y Y PATENTED FEB; 16,- 1904. G. a. TITQOMB. ROPE SYSTEM FOR GOAL BRIDGE HOISTS. v7

APPLIGATION FILED OUT. 16, 1902 2 SHEETS-$3331 1.

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PATENTED PER-16,1904.-

, G. E. TITGOMB. ROPE SYSTEM FOR GOAL BRIDGE HOISTS. APPLIUATION FILED OUT. 16, 1902.

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UNITED STATES PATENT, OFFICE.

GEORGE E. TITGOMB, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE DODGE COAL STORAGE COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A CORPORATION OF CONNELTICUT.

ROPE SYST EIVIFOR COAL-BRIDGE HOISTS.

SPECIFICATION forming part of Letters Patent No. 752,483, dated February 16, 1904.

Application filed October 16,1902.

To aZZ whom, it may concern:

Be it known that I, GEORGE E. TITGOMIB, a

citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Bridge Hoists, of which the following is a specification.

My invention relates to certain improvements in mechanism for handling material in bulk, and the type of apparatus to which my invention is particularly adaptedis essentially a truss structure on which is mounted a trolley carrying a bucket, preferably of the type which can be opened and closed.

The main object of my invention is to so construct the apparatus that the trolley can be traversed on the structure without changing the vertical position of the bucket and yet the bucket can at any time be raised, lowered, opened, or closed at any point.

A further object of the invention is to reduce the number of ropes necessary to handle a bucket of this type.

In the accompanying drawings, Figure 1 is a side view of an inclined truss structure, illustrating my invention. Fig. 2 is a diagram showing the cables for raising and lowering the bucket and for opening and closing the same. Fig. 8 is a view showing the trolley and the cable for shifting the trolley on the structure. Fig. 4 is a view showing the holding-rope for holding a portion of the bucket during the opening and closing of the same. Fig. 5 is a side view of one type of bucket that can be used in carrying out my invention. Fig. 6 is an end view of the bucket shown in Fig. 5, and Fig. 7 is a view illustrating my invention as applied to a horizontal truss structure.

In the type of structure illustrated in Fig. 1 the trolley which carries the bucket is moved in one direction by the traversing mechanism and in the opposite direction by gravity, whereas in the type shown in Fig.7 the trolley is traversed in either direction by the traversing mechanism.

Referring in the first instance to Fig. 1, A

is a bridge-truss arranged on an incline, which ser al 1%. 127,568. (No model.)

is attached at one end to a frame A" and supported at the-other end by a hopper-carrying structure A which is provided with rollers or wheels a, designed to run on a track on the upper portion of a fixed frame F. In the present instance this frame has a suitable storage-bin f.

The structure A runs on tracks a and preferably contains a shelter of, provided with the necessary hoisting motors and drums from the various cables. The truss structure carriesthe trolley from which is suspended the bucket, and the particular combination illustrated is designed to transfer material in bulk from a vessel to a storage-bin under the truss-structure, or vice versa.

The trolley B is mounted on suitable rails carried by the supporting structure A and can move from one extreme end of the said strucibzuigg, to the other. On the trolley are sheaves D is the bucket, preferably of the clamshell type, and which can be opened and closed by suitable mechanism. I have illustrated in Figs. 5 and 6 one type of bucket which can be used in carrying out my invention. In this construction the halves d 02 of the bucket are pivoted at 03 and mounted on the structure are two sheaves d", to which the ends of the cable are attached, one end of the cable being attached to one sheave and the other end to the opposite sheave. These ropes are guided by wheels 03 on the bucket structure.

Coupled to the sections are links 0 c',which are connected together at 0 and carry the frame .0, which has a sheave 0 around which passes the holding-rope c. Extending from the pivot c are chains C, which pass around the hubs of the sheaves 03 so that on holding the rope c and releasing the rope d the weight of the bucket will cause the halves to open, the chain unwinding from the hubs. To close the bucket, all that is necessary is to place tension upon the ropes d, so as to cause the sheaves d to.

rotate and wind the chains C upon the hubs.

The supporting structure being arranged on an incline the trolley is moved in one direction by gravity and in the other direction by a rope I), which is attached to one end of the trolley and passes around sheaves Z2 6 to a drum B. In the modification shown in Fig. 7 there is a duplicate of this rope-transfer, which is attached to the opposite end of the trolley and passes to the rope-drum, so that when one rope is paid out the other rope is coiled upon the drum. Therefore in a horizontal structure the trolley is moved in either direction by the rope-drive mechanism.

The cable (2 is in the form of a loop, having both its ends attached to the bucket. In the present instance, as remarked above, both ends are attached to the sheaves 03 On one side the rope d passes up and around the sheave Z) on the trolley B, around a sheave 11 at one end of the supporting structure, then around a sheave g on the hoisting-trolley G. This hoisting-trolley is preferably mounted on a suitable track on the supporting structure. The rope d passes back to a sheave 11, forming a loop, as shown in Fig. 2, then around a sheave'i to a sheave i and back to a sheave b on the trolley B to the point of attachment on the bucket. It will thus be seen that by moving the hoisting-trolley G, so as to lengthen or shorten the loop in the rope d, the bucket will be raised or lowered. In order to actuate this trolley, I provide a hoisting-rope m, which is attached at m to a fixed point on the supporting structure and passes around a sheave g on the trolley G, then back around a sheave m to a sheave m and finally is attached to an operatingdrum M, so that when the rope is wound upon the drum it will move the trolley G in one direction, which in turn will elevate the bucket. When the drum is turned in the opposite direction, the rope will be paid out and the bucket will be lowered.

The holding-rope c is attached at e to the truss structure and passes around one of the sheaves b on the trolley B, around the sheave of the bucket, back over one of the sheaves b of the trolley, and around a sheave e at the opposite end of the supporting structure, around a sheave e to a sheave 6 and finally to the drum E. This drum E is so arranged in respect to the drum M that the two drums will turn in unison, or the drum M may be turned in either direction independently of the drum E. Any suitable clutch mechanism may be provided for making this connection.

It will thus be seen by the above construction that the bucket can be lowered and opened to receive a load and closed by simply holding the holding-rope c and operating the hoistingrope m, which will raise or lower the bucket through the medium of the cable d, and when the bucket is raised clear of all obstructions it can be traversed to any point throughout the length of the supporting structure by sim ply winding up or paying out the trolleytransfer rope b. The movement of the trolley will not alter the vertical position of the bucket, as the bucket is under the complete control of the hoisting mechanism.

I claim as my invention 1. The combination in a supporting structure, of a trolley carried thereby, a bucket, a cable having both its ends attached to the bucket and passing around sheaves on the trolley and supporting structure, and having a looped portion, a hoisting-sheave in the loop of the said cable, and a hoisting-rope for operating the sheave so as to raise and lower the bucket, substantially as described.

2. The combination in a supporting structure, of a movable trolley carried thereby, means for traversing said trolley, a bucket hung to the trolley, a cable having its ends 30 attached to the bucket, one at each side passing around sheaves on the trolley and supporting structure, a hoisting-sheave in a loop of the said cable,a hoisting-cable, a sheave in the loop of said hoisting-cable, the two sheaves being attached so that on the movement of the hoisting-cable the bucket will be raised or lowered, substantially as described.

3. The combination of a supporting structure, a trolley arranged to travel thereon, means for traversing the trolley, a looped cable passing around sheaves on the trolley and on the supporting structure and having both its ends attached to the bucket, a hoistingrope having one end attached to a fixed point on the structure and the other end attached to a drum, a loop formed in the said hoistingrope, sheaves in the looped cable and in the loop of the hoisting-rope, so that on the operation of the hoisting-rope thebucket will be raised or lowered, substantially as described.

4. The combination in a supporting structure, of a trolley mounted thereon, means for traversing the trolley, a looped cable passing around sheaves on the trolley and on the supporting structure and having its ends attached to the bucket, a sheave in the loop of the cable, hoisting mechanism for traversing the sheave to raise or lower the bucket, a holding-rope having one end attached to the structure and the other end extending to the drum, the bucket being suspended in the loop of the holding-rope, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE E. TITCOMB.

Witnesses:

J 0s. ENTWISLE, W. J. PANOOAST. 

